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2.14.4: Released December 28, 2020
NEW: Many more keyboard shortcuts.
NEW: Display filename when recording audio.
FIXED: Audio output doesn't work on MacOS Big Sur.
FIXED: DC remove button doesn't work when Demod Off mode is selected.
IMPROVED: Better demodulation of FM stereo signals.
2.14.3: Released December 9, 2020
FIXED: Lock button in Audio options dialog is always shaded on MacOS.
FIXED: Restored Airspy HF and BladeRF support in MacOS builds.
FIXED: Restored frequency tooltips on MacOS.
FIXED: Monospace text displayed incorrectly on MacOS.
IMPROVED: Better rendering on high-DPI screens.
2.14.2: Released December 3, 2020
NEW: Added button to lock audio FFT and waterfall ranges.
FIXED: Crash when invalid device string is entered.
FIXED: Receiver starts unexpectedly when "Enable RDS" is checked.
FIXED: Invert scrolling option doesn't apply to audio FFT.
2.14.1: Released November 27, 2020
FIXED: Hardware retuning when dragging frequency axis with center button.
FIXED: Removed non-functional Plot button from I/Q recording dialog.
FIXED: Start DSP when Play button in I/Q recording dialog is clicked.
FIXED: Tooltip for Rec button in I/Q recording dialog.
IMPROVED: More accurate rendering of FFT fill.
IMPROVED: Better rendering of amplitude axis.
IMPROVED: Allow debug logging to be enabled at runtime.
2.14: Released November 19, 2020
NEW: Start/stop DSP via remote control.
NEW: Device scan button in Configure I/O devices dialog.
NEW: Added "Recent settings" menu.
NEW: Added synchronous AM demodulator.
NEW: Added band plan to bottom of FFT.
NEW: Added support for DX cluster.
NEW: Added "F" shortcut to select the frequency controller.
FIXED: PortAudio detection on MacOS.
FIXED: Crash when closing AFSK1200 decoder.
IMPROVED: Make axes take precedence over demod box in plotter.
2.13.5: Released November 7, 2020
FIXED: Set correct buffer size for audio FFT.
2.13.4: Released November 6, 2020
NEW: Added man page for use by distributions.
FIXED: Crash when time span is set and waterfall height is set to 0%.
FIXED: Filter width is incorrectly set when demod is off.
IMPROVED: Removed Boost.Format dependency.
2.13.3: Released November 1, 2020
FIXED: Crash when waterfall height is set to 100%.
IMPROVED: Removed Boost.Program_options dependency.
2.13.2: Released October 24, 2020
NEW: Preliminary support for GNU Radio 3.9.
NEW: Print UDP configuration.
NEW: Viridis color map.
FIXED: Loss of precision in the plotter's frequency axis.
FIXED: Usability on smaller screen sizes.
2.13.1: Released October 17, 2020
FIXED: Crash when invalid sample rate is specified.
FIXED: Decrease minimum size of FFT Settings panel.
FIXED: Typos.
IMPROVED: More Airspy HF+ sample rates added.
2.13: Released October 16, 2020
NEW: Stereo option for UDP streaming.
NEW: Script to generate AppImage.
NEW: Allow scroll wheel direction to be inverted.
FIXED: FM de-emphasis causing audio to be 20 dB quieter than it should be.
FIXED: FM de-emphasis applied incorrectly in WFM stereo receiver.
FIXED: Update waterfall time resolution when FFT settings are changed.
FIXED: Update waterfall time resolution when window is resized.
FIXED: Restore waterfall time span between sessions.
FIXED: FFT buffer overlap calculation.
FIXED: Crash when launching without device connected.
FIXED: Crash when setting invalid RF gains.
FIXED: Audio panadapter / waterfall slider direction.
FIXED: Clear FFT averages when changing FFT size.
FIXED: Crash when source block doesn't support IQ balancing.
FIXED: Bookmark labels in FFT draw over each other.
IMPROVED: DSP and FFT performance.
IMPROVED: Panadapter & waterfall performance.
IMPROVED: Smooth panadapter & waterfall redrawing.
IMPROVED: Better default values for various settings.
IMPROVED: Audio waterfall colormap matches I/Q waterfall.
IMPROVED: Use all available display space for panadapter & waterfall.
IMPROVED: Updated RDS decoder.
IMPROVED: More Airspy HF+ sample rates added.
2.12.1: Released January 27, 2020
NEW: White Hot, Black Hot and White Hot compressed colormaps.
2.12: Released January 26, 2020
NEW: GNU Radio 3.8 support.
NEW: Mute button in audio panel.
NEW: Google Turbo and Plasma color maps.
NEW: Set/get device gains via remote control.
FIXED: FFT display sometimes disappears.
FIXED: Crash on startup when using HackRF.
FIXED: dB scale disappears when zooming to 1 dB per grid line.
FIXED: Raw I/Q output missing one channel.
FIXED: Trap exceptions and show a message instead of crashing.
IMPROVED: Prevent zooming out too far.
IMPROVED: Make unlit digits slightly visible.
IMPROVED: Only show sample rates supported by both models of BladeRF.
2.11.5: Released May 17, 2018
FIXED: Crash in remote control 'q' command.
2.11.4: Released April 17, 2018
FIXED: Reduced size of color selector button in bookmarks tag list.
2.11.3: Released April 13, 2018
FIXED: Memory leak in remote control interface.
IMPROVED: Add backspace key to frequency controller.
2.11.2: Released March 24, 2018
FIXED: Layout on low resolution monitors.
2.11.1: Released March 18, 2018
FIXED: Removed visible border around frequency and meter widgets.
2.11: Released March 18, 2018
NEW: Selectable IQ FFT window type.
FIXED: Problems on Mac Pro computers without built-in audio.
FIXED: Black on black tooltips in the main window.
FIXED: Auto-squelch sets 0 dBFS too often.
FIXED: Can not play I/Q files if path contains a space.
FIXED: Restore gains to slider states when hardware AGC is disabled.
FIXED: Crash on startup when audio output device is gone (Mac OS X).
FIXED: Filter offset no longer limited to +/- 9.999999 MHz.
IMPROVED: Default FFT window for reduced spectral leakage.
IMPROVED: Visual indicator of squelch level in the signal meter.
IMPROVED: Show configuration file path when listing config files using -l
IMPROVED: Microtelecom Perseus integration.
IMPROVED: Implemented PPM correction for RF Space Cloud IQ (gr-osmosdr-gqrx)
IMPORVED: Implemented PPM correction for PlutoSDR (gr-osmosdr-gqrx)
2.10: Released January 21, 2018
FIXED: Crash when starting gqrx using hackrf.
FIXED: Spelling errors.
IMPROVED: SDRPlay integration.
2.9: Released November 11, 2017
NEW: Airspy HF+ support.
FIXED: Always save TCP and UDP host settings.
FIXED: Application hangs when pulseaudio server is not running.
2.8: Released September 16, 2017
NEW: Remote control command to set LNB LO (LNB_LO).
FIXED: Inactive Start DSP and Config buttons in toolbar.
FIXED: Frequency controller digit not redrawn after a resize.
FIXED: Set default mode to AM instead of none.
IMPROVED: Detection of gr-osmosdr when installed in custom directory.
IMPROVED: Remote frequency handling.
2.7: Released August 19, 2017
NEW: Airspy HF+ integration.
NEW: PlutoSDR integration.
NEW: Restore filter low cut and high cut between sessions.
NEW: Restore FM parameters between sessions.
NEW: Restore remote control state between sessions.
NEW: Support for passband when setting mode through remote.
NEW: Widget to enter receiver frequency.
NEW: Button to reset squelch to its default (-150 dB) value.
FIXED: Keep waterfall zoom level and zoom slider synchronised.
FIXED: RDS status is not kept while jumping through bookmark.
FIXED: .conf files are deleted when changes are saved.
FIXED: Remote control not working if $http_proxy is set.
FIXED: Audio rec does not work after trying to play deleted file.
FIXED: QtSvg dependency.
IMPROVED: Tuning through the remote control interface.
IMPROVED: Increase narrow band receiver rate to 96 ksps (for APT).
IMPROVED: LimeSDR integration.
IMPROVED: Voiceover interface.
IMPROVED: Input decimator performance.
IMPROVED: Increased frequency limit to 999 GHz (500 GHz LO).
IMPROVED: Hamradio style frequency display.
IMPROVED: More short waterfall time spans.
2.6.1: Released February 16, 2017
IMPROVED: Option for reverting the behavior of the frequency controller.
2.6: Released October 3, 2016
NEW: 1-2-5 scaling on FFT axis.
NEW: Audio waterfall.
NEW: Remember AGC settings between sessions.
NEW: Right-click on FFT resets frequency zoom.
NEW: Separate dB ranges for pandapter and waterfall.
NEW: Raw I/Q mode.
NEW: Portaudio support.
NEW: Command line option to set Qt style (fusion, windows, ...)
FIXED: Stuttering audio with Pulseaudio backend.
FIXED: Use system font on FFT plot (too small font on high res displays).
FIXED: Broken FUNcube Dongle Pro+ support on Mac OS X 10.11.4.
FIXED: Correct display of negative offsets between -1 and 0 kHz.
FIXED: Reset frequency digits below the one that is being changed.
FIXED: LNB LO could not be set from I/O configuration dialog.
FIXED: Update squelch level when switching between demodulators.
FIXED: Set correct filter range when loading bookmark.
FIXED: White area on waterfall.
FIXED: RFSpace Cloud-IQ support on Mac OS X and in PPA
IMPROVED: Input decimator performance.
IMPROVED: SDRPlay integration.
IMPROVED: Only probe for devices when the program is started.
IMPROVED: 1-2-5 scaling on FFT axis.
IMPROVED: Allow user to enter ALSA device name.
IMPROVED: Set default audio FFT range to -70...0 dB.
IMPROVED: Restore audio FFT dB scaling between sessions.
2.5.3: Released February 3, 2016.
NEW: Set and read squelch via remote control socket.
FIXED: Toolbar appearance on Mac OS X.
IMPROVED: Reworked CW reception so that channel is now centered on carrier.
IMPROVED: Shortcuts to view/hide some of the dock widgets.
IMPROVED: Respond to \dump_state remote command (needed by some clients).
IMPROVED: Read remote frequency as double for rigctl compatibility.
2.5.2: Released January 21, 2016.
NEW: Support for Red Pitaya (RX only).
NEW: Build with GNU Radio 3.7.9.
IMPROVED: Increased spacing between frequency divisions to prevent overlap.
IMPROVED: Reduced minimum window size requirement to around 800x600 pixels.
2.5 Released January 7, 2016
NEW: Read out signal time and on the waterfall (disabled on OS X).
NEW: Save waterfall to graphics file.
NEW: Allow user settable waterfall time span (up to 24 hours).
NEW: Cmake option to build using gr-audio backend (Andrea Merello).
FIXED: FM stereo (revert to pre-2.4 behavior).
FIXED: Mode selector not updated when selecting a WFM OIRT bookmark.
FIXED: Show correct filter preset when filter LO/HI corresponds to one.
FIXED: Prevent RDS panel from growing by making it scrollable.
FIXED: Use correct audio backend on OS X (app bundle only).
IMPROVED: Button layouts (mostly on Mac OS X).
2.4 Released December 14, 2015
NEW: Bookmarks.
NEW: FM RDS decoder using gr-rds.
NEW: Frequency tooltips on the FFT area (disabled on Mac).
NEW: Filter shape selector (soft, normal, sharp).
NEW: Slider to aid zooming on the frequency and dB axes.
NEW: RFSpace Cloud-IQ support.
NEW: OIRT stereo decoder (Daniil Cherednik).
NEW: Input decimator.
FIXED: Prevent crash due to device errors while starting the application.
FIXED: Use hardware frequency in IQ file names.
FIXED: FFT averaging (it can now be disabled).
FIXED: "Could not resolve pattern10600" error messages in the terminal.
FIXED: Antenna selection error with USRP B210 (Ethan Trewhitt).
FIXED: LNB LO value not updated in I/O config dialog.
FIXED: Initial gain of rtlsdr devices is no longer 0 dB.
FIXED: DSP freeze when setting FM de-emphasis time constant to 0.
FIXED: Use correct main category in desktop entry file.
IMPROVED: Support up to 1M point FFT.
IMPROVED: Fractional PPM correction.
IMPROVED: AGC performance.
IMPROVED: FFT performance.
IMPROVED: Right click on frequency digit to clear digits.
IMPROVED: Robustness against malformed remote control commands.
2.3.2 Released November 28, 2014
FIXED: Pandapter and waterfall widths are limited to 4096 pixels.
IMPROVED: Add 2.5 Msps preset for Airspy.
2.3.1 Released August 8, 2014
FIXED: Use correct categories in .desktop file.
2.3.0 Released August 5, 2014
NEW: Support for setting analog bandwidth.
NEW: Support for setting gain stages individually.
NEW: Remember visibility status of main toolbar.
NEW: Restore the geometry of the main window between sessions.
NEW: Restore the state and placement of the dock windows.
NEW: Nuand BladeRF support.
NEW: RF Space SDR-IQ, SDR-IP and Netsdr support.
NEW: Airspy support.
NEW: Peak detection on the FFT plot.
NEW: Max hold on the FFT plot.
NEW: Audio streaming over UDP socket.
NEW: Remote control through TCP socket.
NEW: Set squelch level from current signal/noise level.
NEW: Command line option to list existing configurations.
NEW: I/Q recording and playback.
FIXED: Incorrect handling of decimal values in LNB LO frequency.
FIXED: Correctly apply initial LNB LO frequency.
FIXED: Audio output device selection on Mac OS X.
FIXED: Properly store settings when using Save As function.
FIXED: Crash when recording audio with no rec directory set.
FIXED: Only allow audio playback while DSP is running.
FIXED: Ensure DSP is stopped when we exit.
FIXED: Freeze when switching modes after audio recording.
FIXED: Toggling "ignore limits" changes frequency.
FIXED: Include gqrx.desktop file.
FIXED: Rename scope.svg to gqrx.svg to avoid confusion.
IMPROVED: Gqrx can fit on small screens (900x600 pixels).
IMPROVED: Better color gradient for the waterfall.
IMPROVED: FFT presentation at high rates and high sizes.
IMPROVED: Make release news available through the Help menu.
2.2.0 Released August 8, 2013
NEW: Official Ubuntu PPA and Mac OS X app bundle.
NEW: Allow using audio output devices other than the default.
NEW: Automatic I/Q phase and gain correction (requires gr-iqbal).
NEW: Qt 5 support.
NEW: GNU Radio 3.7 support.
NEW: HackRF Jawbreaker support.
NEW: Funcube Dongle Pro+ support.
NEW: Option to select antenna connector on e.g. USRP devices.
NEW: Configuration option to choose location of WAV recordings.
NEW: Uses gr-audio as default on all platform (pulseaudio still possible).
NEW: Command line option to remove configuration file.
NEW: Command line option to launch I/O device editor before application.
FIXED: Frequency control widget with recent Qt was broken.
FIXED: Bug that caused audio FFT data to be leaked into the I/Q FFT.
FIXED: Audio recording & playback.
FIXED: Proper handling of frequencies above 2147483647 Hz.
IMPROVED: Y-axis panning (click-and-drag).
IMPROVED: Rescale waterfall when resizing the main window.
IMPROVED: gr-audio support on Linux.
IMPROVED: Audio gain setting no longer has impact on WAV recording.
2.1.251 Released on March 1, 2013
FIXED: Incorrect device selection in config dialog.
2.1.246 Released on February 29, 2013
NEW: I/Q swapping option.
NEW: FFT video filter with non-linear gain (still WIP).
NEW: Save and restore FFT settings.
NEW: Save and restore receiver options (offset, mode and squelch level).
NEW: AM DC removal using IIR filter.
FIXED: Removed graphics redraw delay when changing frequency or demodulator.
FIXED: Respect RF frequency range of input device.
FIXED: Added workaround for pixel error introduced in Qt 4.8.
FIXED: Crash when FFT size is smaller than plot width.
FIXED: Show correct initial filter preset in filter selector.
FIXED: Workaround for 'jerky streaming' when DSP is started using rtlsdr.
FIXED: Freeze when channel filter becomes too narrow in AM and FM modes.
FIXED: Crash when changing sample rate of the current input device.
CHANGED: Show device ID (e.g. rtl=0) in title bar instead of description.
IMPROVED: AGC settings moved to dialog window.
IMPROVED: Increase LO resolution to 1 Hz.
IMPROVED: GUI layout fixes for Mac OS X.
IMPROVED: Shortcuts for resetting and re-centering FFT plot after zooming.
IMPROVED: Crash recovery in case of bad config file.
IMPROVED: Support 50 fps FFT rate and allow disabling FFT.
IMPROVED: I/Q DC canceling.
2.1.148 Released on December 9, 2012
NEW: Support for USRP and RTL2832U (rtlsdr) devices.
NEW: Pan & zoom on the pandapter axes.
NEW: Allow changing FFT size.
FIXED: Mac OS X compatibility.
IMPROVED: Various improvements to the user interface.
2.0.0 Released on July 7, 2012
First stable release of C++ version with Funcube Dongle support.
1.x
Initial experiments using Python and gr-qtgui.
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